You need to spend 3 gold + 20 skill points for each new trait, meaning 15g + 100 SP just for one profession. Total 120g + 800 SP for all professions.
New sigils = 6g / New amulets = 20g / New rune = 5g ==> 31g total to unlock
You need to pay one transmutation charge each time you change skin. Now, if you had those skins before the update, aka their PVE version, you don’t need a thing, just equip them and be happy. However, every PVP skin turned into wardrobe, meaning we don’t have any skin to equip, just to transmutate via wardrobe
If you have all your characters lv 2, you need to level them to lv 10 in order to unlock shoulders and a helmet